The competition, hosted by Tanzania Cricket Association (TCA), involves players below 15 years in an effort to develop the game at the domestic level.
Solid batting by Lions Youths was instrumental in the outfit's ability to come out with the win in the match, held at Leaders Club venue.
The youngsters made it a point to set a challenging target for their opponents and therefater frustrated the latter's chase.
Lions Youths raced to 190 runs for three wickets in the allotted 20 overs after winning the toss and electing to bat.
Skipper Abdullah Imtiyaz and opener Ashfaq Imtiyaz had good innings, contributing immensely to Lions Youths' impressive triple digit score.
They had an impressive start to the innings given Imtiyaz surpassed half century mark to record 59 runs which consisted of a boundary.
Fellow opening batsman Naveed Nasir made his presence felt at the crease given he scored 21 runs which consisted of a four.
Top order batsmman Rehaan Atif' early dismissal did little to weaken Lions Youths' resolve, considering Ashfaq stepped up to bolster the quest for an imposing score with his 34 runs not out, which included three fours.
He partnered Salman Yasser, who ended with three runs not out, to close out their outfit's innings.
Al-Madrassa Youths' bowler Mehlum Mufaddal took one wicket, leaking 18 runs in three overs as their atttempt to foil Lions Youths' quest for a good score hit snag.
In response, recording 191 runs to post victory happened to be a daunting task for Al-Madrassa Youths given the youngsters were bowled out for 56 runs in 10.5 overs.
Notable batting showing in the innings came from skipper Taher Zavery, who scored 17 runs that included a four, and opener Mufaddal Bhaijee, who ended with 11 runs which included two fours.
Bhaijee had set out to give his team a good start with his double digit figure, the squad's chase was later dealt a blow given they experienced two quick dismissals.
Fellow opener, Ebrahim Rashid, and top order batsman, Burhanuddin Alibhai, had relatively short spells at the crease, posting five runs and four runs respectively.
They were then sent back to the pavilion by Lions Youths' Ashfaq.
Zavery, to some extent, kept the chase alive with the 17 runs, his dimsissal in the ninth over spelled disaster for the squad considering the side, thereafter, experienced batting collapse.
Ashfaq and Aasim Abdulsamad frustrated Al-Madrassa Youths' chase, in which they took four wickets and three wickets respectively.
Ashfaq had the best bowling spell for Lions Youths given he conceded eight runs in three overs, posting an economy rate of 2.67.
The tournament, which has participating sides locking horns in 20-over games, is, moreover, an opportunity for TCA to select young players who will then be included in national junior teams.
The competition, held for the first time, has brought together five outfits, as disclosed by TCA information officer Atif Salim.
The sides are Aga Khan Youths, Academy Boys, Al-Madrassa Youths, Lions Youths and Twiga Stars.
Salim disclosed; ''It is very pleasing now that normalcy has resumed in our country and schools have also been opened again. We therefore felt it is good time for the women cricket league to resume and the junior league to start.''
''We want to ensure that we complete these leagues by the end of the year without disturbing the calendar for next year,'' he said.